Trifluorosilane
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Trifluorosilane is the
chemical compound A chemical compound is a chemical substance composed of many identical molecules (or molecular entities) containing atoms from more than one chemical element held together by chemical bonds. A molecule consisting of atoms of only one element ...
with the formula F3 H Si. At standard temperature and pressure, trifluorosilane is a colorless gas. Note that the
free radical A daughter category of ''Ageing'', this category deals only with the biological aspects of ageing. Ageing Biogerontology Biological processes Causes of death Cellular processes Gerontology Life extension Metabolic disorders Metabolism ...
F3 Si is often also referred to as trifluorosilane, although more properly referred to as trifluorosilyl.


Preparation

Trifluorosilane has been purified and separated by low-temperature high-vacuum distillation. One preparation method involves products of the reaction between SbF3 and HSiCl3. HSiCl3 is obtained by copper catalyzed reaction between HCl and Silicon at 200-400 °C. Formation has also been reported in certain etching operations of silicon.


Properties

The electric dipole moment of trifluorosilane is 1.26
debye The debye ( , ; symbol: D) is a CGS unit (a non- SI metric unit) of electric dipole momentTwo equal and opposite charges separated by some distance constitute an electric dipole. This dipole possesses an electric dipole moment whose value is give ...
. The length of the silicon to fluorine bond is 1.555 Å, Si-H length is 1.55 Å, and ∠FSiF is 110°.


References


Further reading

* {{silicon compounds Fluorides Nonmetal halides Silanes